Joe Pavelski scored his second power-play goal of the game to tie it with 4:27 left in regulation. Brent Burns also scored for the Sharks, who will now get a break before beginning the second round of the playoffs next week.

Mason Raymond, Alex Burrows and Alexander Edler scored for the Canucks, who were unable to hold onto a late third-period lead for the second time this series.

Cory Schneider made big stops early in the overtime, but gave up the rebound that led to Marleau’s series-clinching goal.

With Daniel Sedin sent off for boarding Tommy Wingels, the Sharks came through with their third power-play goal of the night to win it. Joe Thornton’s shot hit off Schneider and the puck was bouncing in the crease when Marleau just got his stick on it to score the winner, setting off a wild celebration at the Shark Tank and sending Vancouver to another early playoff exit.

The Canucks have lost 10 of their past 11 playoff games to raise major questions about the future of a franchise that made it to Game 7 of the Stanley Cup finals just two years ago.

ISLANDERS 6, PENGUINS 4

UNIONDALE, N.Y. (AP) — John Tavares scored with 9:49 left, and New York tied its first-round series with Pittsburgh with a wild victory.

Only the final lead was safe in Game 4.

Tavares slammed in his own rebound in front after Brad Boyes fed him following a turnover by Penguins star Evgeni Malkin. It was the Islanders’ third one-goal advantage in the game and the one that earned them a 2-2 tie in the highly entertaining series that has featured 5-4 and 6-4 finishes at Nassau Coliseum.

Tavares was serenaded with cheers of “M-V-P” from the frantic crowd that is believing an upset is possible. Casey Cizikas shoved in a shot with 1:16 left to add some much-needed insurance.

Captain Mark Streit scored twice, and Brian Strait and Kyle Okposo also had goals, and Evgeni Nabokov made 27 saves for the eighth-seeded Islanders.

Game 5 is Thursday in Pittsburgh.

SENATORS 3, CANADIENS 2, OT

OTTAWA (AP) — Kyle Turris scored 2:32 into overtime, lifting the Senators into a 3-1 lead. Turris’ shot from the sideboards sneaked past Montreal backup goalie Peter Budaj, who came on for the injured Carey Price at the start of overtime.

Cory Conacher scored with 22.6 seconds to go in regulation to force overtime. Mika Zibanejad had the other goal for the Senators, who got 26 saves from Craig Anderson.

P.K. Subban and Alex Galchenyuk scored 62 seconds apart in the second period for Montreal. Price made 30 saves two nights after allowing all six goals in Ottawa’s 6-1 victory in Game 3. He was injured on Conacher’s tying goal late in the third period.

Game 5 goes Thursday night in Montreal in a series that has seen a little bit of everything.

BLACKHAWKS 3, WILD 0

ST. PAUL, Minn. (AP) — Patrick Sharp scored two goals for Chicago, and the Blackhawks ratcheted up their defense, putting the Wild on the brink of elimination.

Bryan Bickell also scored and Corey Crawford made 25 saves for the Blackhawks, who built a 3-1 lead in this best-of-seven matchup.

The Wild had another goalie get hurt when Josh Harding’s injury forced Darcy Kuemper into action after the first intermission. Sharp scored on Chicago’s first shot at the rookie 62 seconds into the second period.

Minnesota, the only one of the 16 NHL playoff teams without a power-play goal this postseason, went scoreless in six man-advantage situations and is 0 for 15 in the series. Game 5 is back in Chicago on Thursday night.